diff options
Diffstat (limited to 'arch/frv/kernel/irq.c')
| -rw-r--r-- | arch/frv/kernel/irq.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/arch/frv/kernel/irq.c b/arch/frv/kernel/irq.c deleted file mode 100644 index 93513e4ccd2b..000000000000 --- a/arch/frv/kernel/irq.c +++ /dev/null @@ -1,159 +0,0 @@ -/* irq.c: FRV IRQ handling - * - * Copyright (C) 2003, 2004, 2006 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/ptrace.h> -#include <linux/errno.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/timex.h> -#include <linux/random.h> -#include <linux/init.h> -#include <linux/kernel_stat.h> -#include <linux/irq.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/module.h> -#include <linux/bitops.h> - -#include <linux/atomic.h> -#include <asm/io.h> -#include <asm/smp.h> -#include <linux/uaccess.h> -#include <asm/pgalloc.h> -#include <asm/delay.h> -#include <asm/irq.h> -#include <asm/irc-regs.h> -#include <asm/gdb-stub.h> - -#define set_IRR(N,A,B,C,D) __set_IRR(N, (A << 28) | (B << 24) | (C << 20) | (D << 16)) - -extern void __init fpga_init(void); -#ifdef CONFIG_FUJITSU_MB93493 -extern void __init mb93493_init(void); -#endif - -#define __reg16(ADDR) (*(volatile unsigned short *)(ADDR)) - -atomic_t irq_err_count; - -int arch_show_interrupts(struct seq_file *p, int prec) -{ - seq_printf(p, "%*s: ", prec, "ERR"); - seq_printf(p, "%10u\n", atomic_read(&irq_err_count)); - return 0; -} - -/* - * on-CPU PIC operations - */ -static void frv_cpupic_ack(struct irq_data *d) -{ - __clr_RC(d->irq); - __clr_IRL(); -} - -static void frv_cpupic_mask(struct irq_data *d) -{ - __set_MASK(d->irq); -} - -static void frv_cpupic_mask_ack(struct irq_data *d) -{ - __set_MASK(d->irq); - __clr_RC(d->irq); - __clr_IRL(); -} - -static void frv_cpupic_unmask(struct irq_data *d) -{ - __clr_MASK(d->irq); -} - -static struct irq_chip frv_cpu_pic = { - .name = "cpu", - .irq_ack = frv_cpupic_ack, - .irq_mask = frv_cpupic_mask, - .irq_mask_ack = frv_cpupic_mask_ack, - .irq_unmask = frv_cpupic_unmask, -}; - -/* - * handles all normal device IRQs - * - registers are referred to by the __frame variable (GR28) - * - IRQ distribution is complicated in this arch because of the many PICs, the - * way they work and the way they cascade - */ -asmlinkage void do_IRQ(void) -{ - irq_enter(); - generic_handle_irq(__get_IRL()); - irq_exit(); -} - -/* - * handles all NMIs when not co-opted by the debugger - * - registers are referred to by the __frame variable (GR28) - */ -asmlinkage void do_NMI(void) -{ -} - -/* - * initialise the interrupt system - */ -void __init init_IRQ(void) -{ - int level; - - for (level = 1; level <= 14; level++) - irq_set_chip_and_handler(level, &frv_cpu_pic, - handle_level_irq); - - irq_set_handler(IRQ_CPU_TIMER0, handle_edge_irq); - - /* set the trigger levels for internal interrupt sources - * - timers all falling-edge - * - ERR0 is rising-edge - * - all others are high-level - */ - __set_IITMR(0, 0x003f0000); /* DMA0-3, TIMER0-2 */ - __set_IITMR(1, 0x20000000); /* ERR0-1, UART0-1, DMA4-7 */ - - /* route internal interrupts */ - set_IRR(4, IRQ_DMA3_LEVEL, IRQ_DMA2_LEVEL, IRQ_DMA1_LEVEL, - IRQ_DMA0_LEVEL); - set_IRR(5, 0, IRQ_TIMER2_LEVEL, IRQ_TIMER1_LEVEL, IRQ_TIMER0_LEVEL); - set_IRR(6, IRQ_GDBSTUB_LEVEL, IRQ_GDBSTUB_LEVEL, - IRQ_UART1_LEVEL, IRQ_UART0_LEVEL); - set_IRR(7, IRQ_DMA7_LEVEL, IRQ_DMA6_LEVEL, IRQ_DMA5_LEVEL, - IRQ_DMA4_LEVEL); - - /* route external interrupts */ - set_IRR(2, IRQ_XIRQ7_LEVEL, IRQ_XIRQ6_LEVEL, IRQ_XIRQ5_LEVEL, - IRQ_XIRQ4_LEVEL); - set_IRR(3, IRQ_XIRQ3_LEVEL, IRQ_XIRQ2_LEVEL, IRQ_XIRQ1_LEVEL, - IRQ_XIRQ0_LEVEL); - -#if defined(CONFIG_MB93091_VDK) - __set_TM1(0x55550000); /* XIRQ7-0 all active low */ -#elif defined(CONFIG_MB93093_PDK) - __set_TM1(0x15550000); /* XIRQ7 active high, 6-0 all active low */ -#else -#error dont know external IRQ trigger levels for this setup -#endif - - fpga_init(); -#ifdef CONFIG_FUJITSU_MB93493 - mb93493_init(); -#endif -} |
